It also lowers your cortisol (the stress hormone), enabling a higher quality of sleep.

The power of hugs only works when hugged by someone a person knows very well, whereas hugging a stranger can have the opposite effect.

“More frequent partner hugs and higher oxytocin levels are linked to lower blood pressure and heart rate in premenopausal women” Kathleen C. Lighta, , , Karen M. Grewena Biological Psychology Volume 69, Issue 1, April 2005, Pages 5–21